CN109759530A - A kind of production technology of the pump head body for oil-gas mining - Google Patents
A kind of production technology of the pump head body for oil-gas mining Download PDFInfo
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- CN109759530A CN109759530A CN201910060423.5A CN201910060423A CN109759530A CN 109759530 A CN109759530 A CN 109759530A CN 201910060423 A CN201910060423 A CN 201910060423A CN 109759530 A CN109759530 A CN 109759530A
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- China
- Prior art keywords
- forging
- steel billet
- temperature
- head body
- pump head
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Abstract
The invention discloses a kind of production technologies of pump head body for oil-gas mining, comprising the following steps: prepares steel billet, forging steel billet, forging heat treatment, forging steel billet cuts off riser the following steps are included: selection steel billet；Steel billet after shearing is put into heating furnace, charging temperature is not higher than 450 DEG C, increases furnace temperature, keeps the temperature 3-5 hours after furnace temperature is increased to 900-1180 DEG C, be then rapidly heated to 1200-1250 DEG C of forging temperature, and heat preservation is come out of the stove for 8-10 hours；Steel billet after heating is come out of the stove, which is placed on press, carries out jumping-up or pulling；Steel billet after jumping-up or pulling is subjected to reheating；Steel billet after step S4 is kept the temperature 2-5 hours, which is placed on, forges into the forging for meeting target size on press.The present invention solves the problems, such as that the forging method used when processing fracturing pump pump head body at present forges the pump head body come and is easy to appear face checking.
Description
Technical field
The present invention relates to a kind of pump head body production technologies, and in particular to a kind of production work of the pump head body for oil-gas mining
Skill.
Background technique
After oil well production to certain phase, production capacity and permeability reduction improve oil well output to enhance oil extraction ability,
People have invented Fracturing Technology.The method of pressure break divides hydraulic fracturing and high enegry gas fracturing two major classes, and hydraulic fracturing is to lean on
For ground high pressure pump truck vehicle group by fluid high-speed injection well, the high pressure suppressed by shaft bottom makes reservoir rock rupture generate crack.
After preventing pump truck from stopping working, pressure decline, crack voluntarily closes up again, in the injection liquid after formation fracture, mixing ratio
The sand of the big several times of density of earth formations enters crack with fluid together, and permanently rests in crack, and supporting crack is in opening state
State makes oil stream environment be improved for a long time.
Fracturing pump is the capital equipment of pressure break, and wherein fracturing pump pump head body is the important feature of fracturing pump；Currently, processing pressure
The traditional forging method used when splitting pump pump head body is usually that fast forging or open die forging, forging temperature are difficult to ensure, size Control essence
Spend poor, the case where being easy to appear face checking.
Summary of the invention
The forging method forging temperature that the technical problem to be solved by the present invention is to use when currently, processing fracturing pump pump head body
The case where degree is difficult to ensure, size Control precision is poor, and the pump head body processed is easy to appear face checking, it is therefore intended that mention
For a kind of production technology of pump head body for oil-gas mining, the forging method used when processing fracturing pump pump head body at present is solved
Forge the problem of pump head body come is easy to appear face checking.
The present invention is achieved through the following technical solutions:
A kind of production technology of the pump head body for oil-gas mining, comprising the following steps: prepare steel billet, forging steel billet, forging
Part heat treatment, forging steel billet the following steps are included:
S1, selection steel billet, cut off riser；
S2, the steel billet after shearing is put into heating furnace, charging temperature is not higher than 450 DEG C, increases furnace temperature, furnace temperature is increased
3-5 hours are kept the temperature after to 900-1180 DEG C, is then rapidly heated to 1200-1250 DEG C of forging temperature, heat preservation is come out of the stove for 8-10 hours；
S3, will heating come out of the stove after steel billet be placed on press and carry out jumping-up or pulling, initial forging temperature 1180-1250
DEG C, final forging temperature is 750 DEG C -800 DEG C, and forging ratio is greater than or equal to 3.5；
S4, the steel billet after jumping-up or pulling is subjected to reheating, keeps the temperature 2-5 hours after being heated to 900-1080 DEG C；
S5, step S4 is kept the temperature 2-5 hours after steel billet be placed on and forge into the forging for meeting target size on press.
For the present invention in forging, preferred first steel billet selects the superior raw material of performance, is fundamentally solving at present
The ropy problem of the pump head body processed；It is not directly quickly to add steel billet when the present invention heats steel billet for the first time
Heat is to forging temperature, by heating steel billet to forging temperature by the way of segmented, can uniform heat penetration, make forging center portion, table
Each interregional heating temperature in face is consistent, avoids generating temperature stress because of section temperature difference, and leads to forging ingot cracking；This hair
It is bright that the temperature range value of each section of heating temperature has been determined in forging process, there is longer time to be protected after heating every time
Temperature, the time for providing abundance for steel billet stablize its temperature, are not in the biggish temperature difference on steel billet, solve traditional forging side
Temperature change is unstable in method, the uncontrollable problem of temperature；The present invention carries out reheating to forging before forging molding, has
Conducive to the shaping efficiency for improving forging.
The resection of riser is the 5%-30% of steel billet total amount in step S1.Present invention defines the resection of riser, protect
It is pure to demonstrate,prove forging material.
The following steps are included: the forging after forging and forming is made annealing treatment, elimination forging tissue is answered for forging heat treatment
Power, temperature stress to forging hardness are less than or equal to 280 Kilogram Force Per Square Meters.The hardness of usual material is higher, and toughness is got over
Difference, brittleness is with regard to big, and with regard to frangible when by impact force, the present invention reduces the hardness of forging by heat treatment, can effectively improve
The toughness of forging.
Chemical component weight percentage in the steel billet selected in step S1 are as follows: C≤0.07%, Si≤2.00%, Mn≤
2.00%, 14.00%≤Cr≤17.50%, 2.00%≤Ni≤5.50%, 2.50%≤Cu≤5.00%, P≤0.035%,
S≤0.035%, H≤2.0PPM.Using the chemical component analyzed in steel billet, the excellent weight hundred for having selected each chemical component
Divide ratio, so that steel billet fatigue resistance is high, impact resistance and good toughness under low temperature.
Chemical component weight percentage in the steel billet selected in step S1 are as follows: C≤0.05%, Si≤0.75%, 1.20%
≤ Mn≤1.50%, 14.00%≤Cr≤15.5%, 2.00%≤Ni≤4.50%, 2.50%≤Cu≤3.00%, P≤
0.025%, S≤0.008%, H≤2.0PPM.Using the chemical component analyzed in steel billet, eachization is further preferably gone out
The weight percent studied point, so that impact resistance and toughness reach optimal state under steel billet fatigue resistance, low temperature.
Its grain size >=4.5 grade after forging heat treatment.Coarse grains reduce the plasticity for making forging and toughness, fatigue behaviour
It is decreased obviously, therefore, after the present invention is heat-treated forging, the crystal grain of forging is small, and the plasticity and toughness of forging are high.
Forging ratio is greater than 4 in step S3.Forging ratio ratio is bigger, and the precision of inside steel billet is higher, the forging processed
Part quality is better, and forging is not easily susceptible to cracking.
The resection of riser is the 11% of steel billet total amount in step S1.The preferred resection of riser of the present invention.
Step S3, the press in S5 is all made of 2500 tons of press.2500 tons of press forgings, can guarantee to forge permeability.
Compared with prior art, the present invention having the following advantages and benefits:
1, a kind of production technology of the pump head body for oil-gas mining of the present invention is by the way of segmented by heating steel billet
To forging temperature, can uniform heat penetration, keep each interregional heating temperature of forging center portion, surface consistent, avoid because of section temperature
Difference generates temperature stress, and leads to forging ingot cracking；
2, a kind of production technology of the pump head body for oil-gas mining of the present invention is in forging, preferred first steel billet, choosing
The raw material for selecting superior performance, it is ropy in the pump head body for fundamentally solving the problems, such as to process at present；
3, a kind of production technology of the pump head body for oil-gas mining of the present invention carries out forging before forging molding secondary
Heating is conducive to the shaping efficiency for improving forging.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment, the present invention is made
Further to be described in detail, exemplary embodiment of the invention and its explanation for explaining only the invention, are not intended as to this
The restriction of invention.
Embodiment 1
A kind of production technology of the pump head body for oil-gas mining of the present invention, comprising the following steps: prepare steel billet, forged steel
Base, forging heat treatment, forging steel billet the following steps are included:
S1, selection steel billet, cut off riser, and the resection of riser is the 5%-30% of steel billet total amount；
S2, the steel billet after shearing is put into heating furnace, charging temperature is not higher than 450 DEG C, increases furnace temperature, furnace temperature is increased
3-5 hours are kept the temperature after to 900-1180 DEG C, is then rapidly heated to 1200-1250 DEG C of forging temperature, heat preservation is come out of the stove for 8-10 hours；
S3, will heating come out of the stove after steel billet be placed on press and carry out jumping-up or pulling, initial forging temperature 1180-1250
DEG C, final forging temperature is 750 DEG C -800 DEG C, and forging ratio is greater than or equal to 3.5；
S4, the steel billet after jumping-up or pulling is subjected to reheating, keeps the temperature 2-5 hours after being heated to 900-1080 DEG C；
S5, step S4 is kept the temperature 2-5 hours after steel billet be placed on and forge into the forging for meeting target size on press.
Step S3, the press in S5 is all made of 2500 tons of press.2500 tons of press forgings, can guarantee to forge permeability.
For the present invention in forging, preferred first steel billet selects the superior raw material of performance, is fundamentally solving at present
The ropy problem of the pump head body processed；It is not directly quickly to add steel billet when the present invention heats steel billet for the first time
Heat is to forging temperature, by heating steel billet to forging temperature by the way of segmented, can uniform heat penetration, make forging center portion, table
Each interregional heating temperature in face is consistent, avoids generating temperature stress because of section temperature difference, and leads to forging ingot cracking；This hair
It is bright that the temperature range value of each section of heating temperature has been determined in forging process, there is longer time to be protected after heating every time
Temperature, the time for providing abundance for steel billet stablize its temperature, are not in the biggish temperature difference on steel billet, solve traditional forging side
Temperature change is unstable in method, the uncontrollable problem of temperature；The present invention carries out reheating to forging before forging molding, has
Conducive to the shaping efficiency for improving forging.Present invention defines the resection of riser, guarantee that forging material is pure.
Embodiment 2
Based on embodiment 1, forging heat treatment disappears the following steps are included: the forging after forging and forming is made annealing treatment
Except forging structural stress, temperature stress to forging hardness are less than or equal to 280 Kilogram Force Per Square Meters.The hardness of usual material is got over
Height, toughness is poorer, and brittleness is with regard to big, and with regard to frangible when by impact force, the present invention reduces the hardness of forging, energy by heat treatment
Enough effectively improve the toughness of forging.Its grain size >=4.5 grade after forging heat treatment of the present invention.Coarse grains will make the plasticity of forging
It is reduced with toughness, fatigue behaviour is decreased obviously, and therefore, after the present invention is heat-treated forging, the crystal grain of forging is small, the plasticity of forging
With toughness height.
Embodiment 3
Based on the above embodiment, chemical component weight percentage in the steel billet selected in step S1 are as follows: C≤0.07%, Si
≤ 2.00%, Mn≤2.00%, 14.00%≤Cr≤17.50%, 2.00%≤Ni≤5.50%, 2.50%≤Cu≤
5.00%, P≤0.035%, S≤0.035%, H≤2.0PPM.It is excellent to have selected respectively using the chemical component analyzed in steel billet
The weight percent of a chemical component, so that steel billet fatigue resistance is high, impact resistance and good toughness under low temperature.
Embodiment 4
Based on the above embodiment, chemical component weight percentage in the steel billet selected in step S1 are as follows: C≤0.05%, Si
≤ 0.75%, 1.20%≤Mn≤1.50%, 14.00%≤Cr≤15.5%, 2.00%≤Ni≤4.50%, 2.50%≤Cu
≤ 3.00%, P≤0.025%, S≤0.008%, H≤2.0PPM.It is further excellent using the chemical component analyzed in steel billet
The weight percent of each chemical component is had selected, so that impact resistance and toughness reach best under steel billet fatigue resistance, low temperature
State.
Embodiment 5
Based on the above embodiment, forging ratio is greater than 4 in step S3.Forging ratio ratio is bigger, and the precision of inside steel billet is got over
Height, the forging quality processed is better, and forging is not easily susceptible to cracking.The present invention forges situation according to practical, preferably forging ratio
Range.
Embodiment 6
Based on the above embodiment, the resection of riser is the 11% of steel billet total amount in step S1.The preferred riser of the present invention
Resection.
Embodiment 7
With the steel billet in embodiment 4, according to forging method described in embodiment 1, based on preferred in other embodiments
Condition prepares oil-gas mining pump head body, has carried out the examination such as service life, compressive resistance, low-temperature impact to the pump head body
Test, test result is as follows: service life is greater than 800 hours, and compressive resistance is up to 1100-1300mpa, and low-temperature impact breaks through -40
℃AKV≥34J。
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of production technology of the pump head body for oil-gas mining, comprising the following steps: prepare steel billet, forging steel billet, forging
Heat treatment, which is characterized in that forging steel billet the following steps are included:
S1, selection steel billet, cut off riser；
S2, the steel billet after shearing is put into heating furnace, charging temperature is not higher than 450 DEG C, increases furnace temperature, furnace temperature is increased to
3-5 hours are kept the temperature after 900-1180 DEG C, is then rapidly heated to 1200-1250 DEG C of forging temperature, heat preservation is come out of the stove for 8-10 hours；
S3, will heating come out of the stove after steel billet be placed on press and carry out jumping-up or pulling, initial forging temperature is 1180-1250 DEG C, eventually
Forging temperature is 750 DEG C -800 DEG C, and forging ratio is greater than or equal to 3.5；
S4, the steel billet after jumping-up or pulling is subjected to reheating, keeps the temperature 2-5 hours after being heated to 900-1080 DEG C；
S5, step S4 is kept the temperature 2-5 hours after steel billet be placed on and forge into the forging for meeting target size on press.
2. a kind of production technology of pump head body for oil-gas mining according to claim 1, which is characterized in that step S1
The resection of middle riser is the 5%-30% of steel billet total amount.
3. a kind of production technology of pump head body for oil-gas mining according to claim 1, which is characterized in that forging heat
Processing is the following steps are included: the forging after forging and forming is made annealing treatment, elimination forging structural stress, temperature stress to forging
Part hardness is less than or equal to 280 Kilogram Force Per Square Meters.
4. a kind of production technology of pump head body for oil-gas mining according to claim 1, which is characterized in that step S1
Chemical component weight percentage in the steel billet of middle selection are as follows: C≤0.07%, Si≤2.00%, Mn≤2.00%, 14.00%≤
Cr≤17.50%, 2.00%≤Ni≤5.50%, 2.50%≤Cu≤5.00%, P≤0.035%, S≤0.035%, H≤
2.0PPM。
5. a kind of production technology of pump head body for oil-gas mining according to claim 4, which is characterized in that step S1
Chemical component weight percentage in the steel billet of middle selection are as follows: C≤0.05%, Si≤0.75%, 1.20%≤Mn≤1.50%,
14.00%≤Cr≤15.5%, 2.00%≤Ni≤4.50%, 2.50%≤Cu≤3.00%, P≤0.025%, S≤
0.008%, H≤2.0PPM.
6. a kind of production technology of pump head body for oil-gas mining according to claim 1, which is characterized in that forging heat
Its grain size >=4.5 grade after processing.
7. a kind of production technology of pump head body for oil-gas mining according to claim 1, which is characterized in that step S3
Middle forging ratio is greater than 4.
8. a kind of production technology of pump head body for oil-gas mining according to claim 2, which is characterized in that step S1
The resection of middle riser is the 11% of steel billet total amount.
9. a kind of production technology of pump head body for oil-gas mining according to claim 1, which is characterized in that step
Press in S3, S5 is all made of 2500 tons of press.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910060423.5A CN109759530A (en) | 2019-01-22 | 2019-01-22 | A kind of production technology of the pump head body for oil-gas mining |
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| CN201910060423.5A CN109759530A (en) | 2019-01-22 | 2019-01-22 | A kind of production technology of the pump head body for oil-gas mining |
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